22acaf438e
Change some internal path names.
...
This is mostly to sync up with some changes from Google's internal
repositories; it does not affect the open-source distribution in itself.
2015-06-22 15:39:08 +02:00
3ec60ac987
Mark ARMv4 as not supporting unaligned accesses (not just ARMv5 and ARMv6);
...
apparently Debian still targets these by default, giving us segfaults on
armel.
R=sanjay
git-svn-id: https://snappy.googlecode.com/svn/trunk@64 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2012-07-04 09:28:33 +00:00
8b95464146
Snappy library no longer depends on iostream.
...
Achieved by moving logging macro definitions to a test-only
header file, and by changing non-test code to use assert,
fprintf, and abort instead of LOG/CHECK macros.
R=sesse
git-svn-id: https://snappy.googlecode.com/svn/trunk@62 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2012-05-22 09:32:50 +00:00
f8829ea39d
Enable the use of unaligned loads and stores for ARM-based architectures
...
where they are available (ARMv7 and higher). This gives a significant
speed boost on ARM, both for compression and decompression.
It should not affect x86 at all.
There are more changes possible to speed up ARM, but it might not be
that easy to do without hurting x86 or making the code uglier.
Also, we de not try to use NEON yet.
Microbenchmark results on a Cortex-A9 1GHz, using g++ 4.6.2 (from Ubuntu/Linaro),
-O2 -DNDEBUG -Wa,-march=armv7a -mtune=cortex-a9 -mthumb-interwork:
Benchmark Time(ns) CPU(ns) Iterations
---------------------------------------------------
BM_UFlat/0 524806 529100 378 184.6MB/s html [+33.6%]
BM_UFlat/1 5139790 5200000 100 128.8MB/s urls [+28.8%]
BM_UFlat/2 86540 84166 1901 1.4GB/s jpg [ +0.6%]
BM_UFlat/3 215351 210176 904 428.0MB/s pdf [+29.8%]
BM_UFlat/4 2144490 2100000 100 186.0MB/s html4 [+33.3%]
BM_UFlat/5 194482 190000 1000 123.5MB/s cp [+36.2%]
BM_UFlat/6 91843 90175 2107 117.9MB/s c [+38.6%]
BM_UFlat/7 28535 28426 6684 124.8MB/s lsp [+34.7%]
BM_UFlat/8 9206600 9200000 100 106.7MB/s xls [+42.4%]
BM_UFlat/9 1865273 1886792 106 76.9MB/s txt1 [+32.5%]
BM_UFlat/10 1576809 1587301 126 75.2MB/s txt2 [+32.3%]
BM_UFlat/11 4968450 4900000 100 83.1MB/s txt3 [+32.7%]
BM_UFlat/12 6673970 6700000 100 68.6MB/s txt4 [+32.8%]
BM_UFlat/13 2391470 2400000 100 203.9MB/s bin [+29.2%]
BM_UFlat/14 334601 344827 522 105.8MB/s sum [+30.6%]
BM_UFlat/15 37404 38080 5252 105.9MB/s man [+33.8%]
BM_UFlat/16 535470 540540 370 209.2MB/s pb [+31.2%]
BM_UFlat/17 1875245 1886792 106 93.2MB/s gaviota [+37.8%]
BM_UValidate/0 178425 179533 1114 543.9MB/s html [ +2.7%]
BM_UValidate/1 2100450 2000000 100 334.8MB/s urls [ +5.0%]
BM_UValidate/2 1039 1044 172413 113.3GB/s jpg [ +3.4%]
BM_UValidate/3 59423 59470 3363 1.5GB/s pdf [ +7.8%]
BM_UValidate/4 760716 766283 261 509.8MB/s html4 [ +6.5%]
BM_ZFlat/0 1204632 1204819 166 81.1MB/s html (23.57 %) [+32.8%]
BM_ZFlat/1 15656190 15600000 100 42.9MB/s urls (50.89 %) [+27.6%]
BM_ZFlat/2 403336 410677 487 294.8MB/s jpg (99.88 %) [+16.5%]
BM_ZFlat/3 664073 671140 298 134.0MB/s pdf (82.13 %) [+28.4%]
BM_ZFlat/4 4961940 4900000 100 79.7MB/s html4 (23.55 %) [+30.6%]
BM_ZFlat/5 500664 501253 399 46.8MB/s cp (48.12 %) [+33.4%]
BM_ZFlat/6 217276 215982 926 49.2MB/s c (42.40 %) [+25.0%]
BM_ZFlat/7 64122 65487 3054 54.2MB/s lsp (48.37 %) [+36.1%]
BM_ZFlat/8 18045730 18000000 100 54.6MB/s xls (41.34 %) [+34.4%]
BM_ZFlat/9 4051530 4000000 100 36.3MB/s txt1 (59.81 %) [+25.0%]
BM_ZFlat/10 3451800 3500000 100 34.1MB/s txt2 (64.07 %) [+25.7%]
BM_ZFlat/11 11052340 11100000 100 36.7MB/s txt3 (57.11 %) [+24.3%]
BM_ZFlat/12 14538690 14600000 100 31.5MB/s txt4 (68.35 %) [+24.7%]
BM_ZFlat/13 5041850 5000000 100 97.9MB/s bin (18.21 %) [+32.0%]
BM_ZFlat/14 908840 909090 220 40.1MB/s sum (51.88 %) [+22.2%]
BM_ZFlat/15 86921 86206 1972 46.8MB/s man (59.36 %) [+42.2%]
BM_ZFlat/16 1312315 1315789 152 86.0MB/s pb (23.15 %) [+34.5%]
BM_ZFlat/17 3173120 3200000 100 54.9MB/s gaviota (38.27%) [+28.1%]
The move from 64-bit to 32-bit operations for the copies also affected 32-bit x86;
positive on the decompression side, and slightly negative on the compression side
(unless that is noise; I only ran once):
Benchmark Time(ns) CPU(ns) Iterations
-----------------------------------------------------
BM_UFlat/0 86279 86140 7778 1.1GB/s html [ +7.5%]
BM_UFlat/1 839265 822622 778 813.9MB/s urls [ +9.4%]
BM_UFlat/2 9180 9143 87500 12.9GB/s jpg [ +1.2%]
BM_UFlat/3 35080 35000 20000 2.5GB/s pdf [+10.1%]
BM_UFlat/4 350318 345000 2000 1.1GB/s html4 [ +7.0%]
BM_UFlat/5 33808 33472 21212 701.0MB/s cp [ +9.0%]
BM_UFlat/6 15201 15214 46667 698.9MB/s c [+14.9%]
BM_UFlat/7 4652 4651 159091 762.9MB/s lsp [ +7.5%]
BM_UFlat/8 1285551 1282528 538 765.7MB/s xls [+10.7%]
BM_UFlat/9 282510 281690 2414 514.9MB/s txt1 [+13.6%]
BM_UFlat/10 243494 239286 2800 498.9MB/s txt2 [+14.4%]
BM_UFlat/11 743625 740000 1000 550.0MB/s txt3 [+14.3%]
BM_UFlat/12 999441 989717 778 464.3MB/s txt4 [+16.1%]
BM_UFlat/13 412402 410076 1707 1.2GB/s bin [ +7.3%]
BM_UFlat/14 54876 54000 10000 675.3MB/s sum [+13.0%]
BM_UFlat/15 6146 6100 100000 660.8MB/s man [+14.8%]
BM_UFlat/16 90496 90286 8750 1.2GB/s pb [ +4.0%]
BM_UFlat/17 292650 292000 2500 602.0MB/s gaviota [+18.1%]
BM_UValidate/0 49620 49699 14286 1.9GB/s html [ +0.0%]
BM_UValidate/1 501371 500000 1000 1.3GB/s urls [ +0.0%]
BM_UValidate/2 232 227 3043478 521.5GB/s jpg [ +1.3%]
BM_UValidate/3 17250 17143 43750 5.1GB/s pdf [ -1.3%]
BM_UValidate/4 198643 200000 3500 1.9GB/s html4 [ -0.9%]
BM_ZFlat/0 227128 229415 3182 425.7MB/s html (23.57 %) [ -1.4%]
BM_ZFlat/1 2970089 2960000 250 226.2MB/s urls (50.89 %) [ -1.9%]
BM_ZFlat/2 45683 44999 15556 2.6GB/s jpg (99.88 %) [ +2.2%]
BM_ZFlat/3 114661 113136 6364 795.1MB/s pdf (82.13 %) [ -1.5%]
BM_ZFlat/4 919702 914286 875 427.2MB/s html4 (23.55%) [ -1.3%]
BM_ZFlat/5 108189 108422 6364 216.4MB/s cp (48.12 %) [ -1.2%]
BM_ZFlat/6 44525 44000 15909 241.7MB/s c (42.40 %) [ -2.9%]
BM_ZFlat/7 15973 15857 46667 223.8MB/s lsp (48.37 %) [ +0.0%]
BM_ZFlat/8 2677888 2639405 269 372.1MB/s xls (41.34 %) [ -1.4%]
BM_ZFlat/9 800715 780000 1000 186.0MB/s txt1 (59.81 %) [ -0.4%]
BM_ZFlat/10 700089 700000 1000 170.5MB/s txt2 (64.07 %) [ -2.9%]
BM_ZFlat/11 2159356 2138365 318 190.3MB/s txt3 (57.11 %) [ -0.3%]
BM_ZFlat/12 2796143 2779923 259 165.3MB/s txt4 (68.35 %) [ -1.4%]
BM_ZFlat/13 856458 835476 778 585.8MB/s bin (18.21 %) [ -0.1%]
BM_ZFlat/14 166908 166857 4375 218.6MB/s sum (51.88 %) [ -1.4%]
BM_ZFlat/15 21181 20857 35000 193.3MB/s man (59.36 %) [ -0.8%]
BM_ZFlat/16 244009 239973 2917 471.3MB/s pb (23.15 %) [ -1.4%]
BM_ZFlat/17 596362 590000 1000 297.9MB/s gaviota (38.27%) [ +0.0%]
R=sanjay
git-svn-id: https://snappy.googlecode.com/svn/trunk@59 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2012-02-21 17:02:17 +00:00
d9068ee301
Fix public issue r57: Fix most warnings with -Wall, mostly signed/unsigned
...
warnings. There are still some in the unit test, but the main .cc file should
be clean. We haven't enabled -Wall for the default build, since the unit test
is still not clean.
This also fixes a real bug in the open-source implementation of
ReadFileToStringOrDie(); it would not detect errors correctly.
I had to go through some pains to avoid performance loss as the types
were changed; I think there might still be some with 32-bit if and only if LFS
is enabled (ie., size_t is 64-bit), but for regular 32-bit and 64-bit I can't
see any losses, and I've diffed the generated GCC assembler between the old and
new code without seeing any significant choices. If anything, it's ever so
slightly faster.
This may or may not enable compression of very large blocks (>2^32 bytes)
when size_t is 64-bit, but I haven't checked, and it is still not a supported
case.
git-svn-id: https://snappy.googlecode.com/svn/trunk@56 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2012-01-04 13:10:46 +00:00
e2e3032868
Fix public issue #50 : Include generic byteswap macros.
...
Also include Solaris 10 and FreeBSD versions.
R=csilvers
git-svn-id: https://snappy.googlecode.com/svn/trunk@49 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2011-09-15 09:50:05 +00:00
f1063a5dc4
Use the right #ifdef test for sys/mman.h.
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Based on patch by Travis Vitek.
git-svn-id: https://snappy.googlecode.com/svn/trunk@47 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2011-08-10 18:44:16 +00:00
3dd93f3ec7
Fix public issue #27 : Add HAVE_CONFIG_H tests around the config.h
...
inclusion in snappy-stubs-internal.h, which eases compiling outside the
automake/autoconf framework.
R=csilvers
DELTA=5 (4 added, 1 deleted, 0 changed)
Revision created by MOE tool push_codebase.
MOE_MIGRATION=1152
git-svn-id: https://snappy.googlecode.com/svn/trunk@25 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2011-03-30 20:27:53 +00:00
b4bbc1041b
Change Snappy from the Apache 2.0 to a BSD-type license.
...
R=dannyb
DELTA=328 (80 added, 184 deleted, 64 changed)
Revision created by MOE tool push_codebase.
MOE_MIGRATION=1061
git-svn-id: https://snappy.googlecode.com/svn/trunk@20 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2011-03-25 16:14:41 +00:00
2e182e9bb8
Make the unit test work on systems without mmap(). This is required for,
...
among others, Windows support. For Windows in specific, we could have used
CreateFileMapping/MapViewOfFile, but this should at least get us a bit closer
to compiling, and is of course also relevant for embedded systems with no MMU.
(Part 1/2)
R=csilvers
DELTA=9 (8 added, 0 deleted, 1 changed)
Revision created by MOE tool push_codebase.
MOE_MIGRATION=1031
git-svn-id: https://snappy.googlecode.com/svn/trunk@15 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2011-03-24 19:12:27 +00:00
28a6440239
Revision created by MOE tool push_codebase.
...
MOE_MIGRATION=
git-svn-id: https://snappy.googlecode.com/svn/trunk@2 03e5f5b5-db94-4691-08a0-1a8bf15f6143
2011-03-18 17:14:15 +00:00
Steinar H. Gunderson